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https://www.readbyqxmd.com/read/28101652/alteration-of-metabolomic-markers-of-amino-acid-metabolism-in-piglets-with-in-feed-antibiotics
#1
Chunlong Mu, Yuxiang Yang, Kaifan Yu, Miao Yu, Chuanjian Zhang, Yong Su, Weiyun Zhu
In-feed antibiotics have been used to promote growth in piglets, but its impact on metabolomics profiles associated with host metabolism is largely unknown. In this study, to test the hypothesis that antibiotic treatment may affect metabolite composition both in the gut and host biofluids, metabolomics profiles were analyzed in antibiotic-treated piglets. Piglets were fed a corn-soy basal diet with or without in-feed antibiotics from postnatal day 7 to day 42. The serum biochemical parameters, metabolomics profiles of the serum, urine, and jejunal digesta, and indicators of microbial metabolism (short-chain fatty acids and biogenic amines) were analyzed...
January 18, 2017: Amino Acids
https://www.readbyqxmd.com/read/28095889/evolution-of-gut-microbiota-composition-from-birth-to-24-weeks-in-the-infantmet-cohort
#2
Cian J Hill, Denise B Lynch, Kiera Murphy, Marynka Ulaszewska, Ian B Jeffery, Carol Anne O'Shea, Claire Watkins, Eugene Dempsey, Fulvio Mattivi, Kieran Touhy, R Paul Ross, C Anthony Ryan, Paul W O' Toole, Catherine Stanton
BACKGROUND: The gut is the most extensively studied niche of the human microbiome. The aim of this study was to characterise the initial gut microbiota development of a cohort of breastfed infants (n = 192) from 1 to 24 weeks of age. METHODS: V4-V5 region 16S rRNA amplicon Illumina sequencing and, in parallel, bacteriological culture. The metabolomic profile of infant urine at 4 weeks of age was also examined by LC-MS. RESULTS: Full-term (FT), spontaneous vaginally delivered (SVD) infants' microbiota remained stable at both phylum and genus levels during the 24-week period examined...
January 17, 2017: Microbiome
https://www.readbyqxmd.com/read/28095303/gd-dtpa-induced-dynamic-metabonomic-changes-in-rat-biofluids
#3
Chuanling Wan, Youyang Zhan, Rong Xue, Yijie Wu, Xiaojing Li, Fengkui Pei
OBJECTIVES: The purposes of this study were (1) to detect the dynamic metabonomic changes induced by gadopentetate dimeglumine (Gd-DTPA) and (2) to investigate the potential metabolic disturbances associated with the pathogenesis of nephrogenic systemic fibrosis (NSF) at the early stage. METHODS: A nuclear magnetic resonance (NMR)-based metabolomics approach was used to investigate the urinary and serum metabolic changes induced by a single tail vein injection of Gd-DTPA (dosed at 2 and 5mmol/kg body weight) in rats...
January 14, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28069054/the-effect-of-a-novel-probiotic-on-metabolic-biomarkers-in-adults-with-prediabetes-and-recently-diagnosed-type-2-diabetes-mellitus-study-protocol-for-a-randomized-controlled-trial
#4
Talia Palacios, Luis Vitetta, Samantha Coulson, Claire D Madigan, Gareth S Denyer, Ian D Caterson
BACKGROUND: Shifts in the gastrointestinal microbiome have been shown to contribute to the progression of metabolic diseases including prediabetes and type 2 diabetes mellitus. Research suggests that in-vivo modulation of the gut microbiome by specific probiotic microorganisms may improve insulin sensitivity and blood sugar management, preventing or delaying the development of type 2 diabetes mellitus. However, further research is needed to understand the effect of probiotics as a therapy for the treatment of metabolic diseases...
January 9, 2017: Trials
https://www.readbyqxmd.com/read/28040509/integration-of-proteomics-and-metabolomics-to-elucidate-metabolic-adaptation-in-leishmania
#5
Snezhana Akpunarlieva, Stefan Weidt, Dhilia Lamasudin, Christina Naula, David Henderson, Michael Barrett, Karl Burgess, Richard Burchmore
: Leishmania parasites multiply and develop in the gut of a sand fly vector in order to be transmitted to a vertebrate host. During this process they encounter and exploit various nutrients, including sugars, and amino and fatty acids. We have previously generated a mutant Leishmania line that is deficient in glucose transport and which displays some biologically important phenotypic changes such as reduced growth in axenic culture, reduced biosynthesis of hexose-containing virulence factors, increased sensitivity to oxidative stress, and dramatically reduced parasite burden in both insect vector and macrophage host cells...
December 28, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/28034304/temporal-bacterial-and-metabolic-development-of-the-preterm-gut-reveals-specific-signatures-in-health-and-disease
#6
Christopher J Stewart, Nicholas D Embleton, Emma C L Marrs, Daniel P Smith, Andrew Nelson, Bashir Abdulkadir, Tom Skeath, Joseph F Petrosino, John D Perry, Janet E Berrington, Stephen P Cummings
BACKGROUND: The preterm microbiome is crucial to gut health and may contribute to necrotising enterocolitis (NEC), which represents the most significant pathology affecting preterm infants. From a cohort of 318 infants, <32 weeks gestation, we selected 7 infants who developed NEC (defined rigorously) and 28 matched controls. We performed detailed temporal bacterial (n = 641) and metabolomic (n = 75) profiling of the gut microbiome throughout the disease. RESULTS: A core community of Klebsiella, Escherichia, Staphyloccocus, and Enterococcus was present in all samples...
December 29, 2016: Microbiome
https://www.readbyqxmd.com/read/28003647/metabolic-phenotyping-for-discovery-of-urinary-biomarkers-of-diet-xenobiotics-and-blood-pressure-in-the-intermap-study-an-overview
#7
REVIEW
Queenie Chan, Ruey Leng Loo, Timothy M D Ebbels, Linda Van Horn, Martha L Daviglus, Jeremiah Stamler, Jeremy K Nicholson, Elaine Holmes, Paul Elliott
The etiopathogenesis of cardiovascular diseases (CVDs) is multifactorial. Adverse blood pressure (BP) is a major independent risk factor for epidemic CVD affecting ~40% of the adult population worldwide and resulting in significant morbidity and mortality. Metabolic phenotyping of biological fluids has proven its application in characterizing low-molecular-weight metabolites providing novel insights into gene-environmental-gut microbiome interaction in relation to a disease state. In this review, we synthesize key results from the INTERnational study of MAcro/micronutrients and blood Pressure (INTERMAP) Study, a cross-sectional epidemiologic study of 4680 men and women aged 40-59 years from Japan, the People's Republic of China, the United Kingdom and the United States...
December 22, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28000223/western-diet-induces-colonic-nitrergic-myenteric-neuropathy-and-dysmotility-in-mice-via-saturated-fatty-acid-and-lps-induced-tlr4-signaling
#8
François Reichardt, Benoit Chassaing, Behtash Ghazi Nezami, Ge Li, Sahar Tabatabavakili, Simon Mwangi, Karan Uppal, Bill Liang, Matam Vijay-Kumar, Dean Jones, Andrew T Gewirtz, Shanthi Srinivasan
Consumption of high-fat diets (HFD) is associated with myenteric neurodegeneration associated with delayed colonic transit and constipation. We examined the hypothesis that both HFD's inherent increase in plasma free fatty acids (FFA) and HFD-induced alteration in gut microbiota contribute to the pathophysiology of these disorders. C57BL/6 mice were fed a Western diet (WD, 35% kcal from fat- enriched in palmitate) or a purified regular diet (RD, 16.9% kcal from fat) for 3, 6, 9 and 12 weeks. Gut microbiota dysbiosis was investigated by fecal LPS measurement and metabolomics (LTQ-FTMS) analysis...
December 20, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27994068/resetting-microbiota-by-lactobacillus-reuteri-inhibits-t-reg-deficiency-induced-autoimmunity-via-adenosine-a2a-receptors
#9
Baokun He, Thomas K Hoang, Ting Wang, Michael Ferris, Christopher M Taylor, Xiangjun Tian, Meng Luo, Dat Q Tran, Jain Zhou, Nina Tatevian, Fayong Luo, Jose G Molina, Michael R Blackburn, Thomas H Gomez, Stefan Roos, J Marc Rhoads, Yuying Liu
Regulatory T (T reg) cell deficiency causes lethal, CD4(+) T cell-driven autoimmune diseases. Stem cell transplantation is used to treat these diseases, but this procedure is limited by the availability of a suitable donor. The intestinal microbiota drives host immune homeostasis by regulating the differentiation and expansion of T reg, Th1, and Th2 cells. It is currently unclear if T reg cell deficiency-mediated autoimmune disorders can be treated by targeting the enteric microbiota. Here, we demonstrate that Foxp3(+) T reg cell deficiency results in gut microbial dysbiosis and autoimmunity over the lifespan of scurfy (SF) mouse...
January 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27987392/urinary-metabolic-profiling-of-cisplatin-nephrotoxicity-and-nephroprotective-effects-of-orthosiphon-stamineus-leaves-elucidated-by-1-h-nmr-spectroscopy
#10
Raghunath Pariyani, Intan Safinar Ismail, Amalina Azam, Alfi Khatib, Faridah Abas, Khozirah Shaari, Hazilawati Hamza
Orthosiphon stamineus (OS) is a popular medicinal herb used in traditional Chinese medicine as a diuretic agent and for renal system disorders. This study employed (1)H NMR based metabolomics approach to investigate the possible protective activity of OS in cisplatin induced nephrotoxicity owing to its diuretic and antioxidant activities. Aqueous (OSAE) and 50% aqueous ethanolic (OSFE) extracts of OS leaves were orally administered at 400mg/kg BW doses to rats which were then intraperitoneally injected with cisplatin at 5mg/kg BW dose...
December 8, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27974176/ticking-in-place-for-the-microbiome-to-message-out
#11
Xue Liang, Scott J Bultman
In a recent issue of Cell, Thaiss et al. (2016) report that gut microbiota exhibit diurnal rhythmicity in biogeographical localization and metabolomics during the 24 hr light-dark cycle. This oscillation, together with the host circadian clock, co-regulates the colonic and hepatic epigenome and transcriptome.
December 13, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/27940670/environmental-enteric-dysfunction-and-growth-failure-stunting-in-global-child-health
#12
REVIEW
Victor Owino, Tahmeed Ahmed, Michael Freemark, Paul Kelly, Alexander Loy, Mark Manary, Cornelia Loechl
Approximately 25% of the world's children aged <5 years have stunted growth, which is associated with increased mortality, cognitive dysfunction, and loss of productivity. Reducing by 40% the number of stunted children is a global target for 2030. The pathogenesis of stunting is poorly understood. Prenatal and postnatal nutritional deficits and enteric and systemic infections clearly contribute, but recent findings implicate a central role for environmental enteric dysfunction (EED), a generalized disturbance of small intestinal structure and function found at a high prevalence in children living under unsanitary conditions...
December 2016: Pediatrics
https://www.readbyqxmd.com/read/27936282/metabolomic-data-suggest-regulation-of-black-howler-monkey-alouatta-pigra-diet-composition-at-the-molecular-level
#13
Katherine R Amato, Alexander Ulanov, Kou-San Ju, Paul A Garber
In addition to macronutrients, foods consist of a complex set of chemical compounds that can influence dietary selectivity and consumer physiology. Metabolomics allow us to describe this complexity by quantifying all small molecules, or metabolites, in a food item. In this study we use GC-MS based metabolomics to describe the metabolite profiles of foods consumed by one population of Mexican black howler monkeys (Alouatta pigra) over a 10-month period. Our data indicate that each food exhibited a distinct metabolite profile, and the average weekly intake of metabolites such as neochlorogenic acid and serotonin (5-hydroxytryptamine) was correlated with the consumption of certain plant parts...
December 9, 2016: American Journal of Primatology
https://www.readbyqxmd.com/read/27921083/integrated-role-of-bifidobacterium-animalis-subsp-lactis-supplementation-in-gut-microbiota-immunity-and-metabolism-of-infant-rhesus-monkeys
#14
Xuan He, Carolyn M Slupsky, James W Dekker, Neill W Haggarty, Bo Lönnerdal
To investigate the impact of probiotic supplementation of infant formula on immune parameters, intestinal microbiota, and metabolism, five individually housed infant rhesus monkeys exclusively fed standard infant formula supplemented with probiotics (Bifidobacterium animalis subsp. lactis HN019) from birth until 3 months of age were compared with five standard formula-fed and five breast-fed monkeys. Anthropometric measurements, serum insulin, immune parameters, fecal microbiota, and metabolic profiles of serum, urine, and feces were evaluated...
November 2016: MSystems
https://www.readbyqxmd.com/read/27912059/microbiota-diurnal-rhythmicity-programs-host-transcriptome-oscillations
#15
Christoph A Thaiss, Maayan Levy, Tal Korem, Lenka Dohnalová, Hagit Shapiro, Diego A Jaitin, Eyal David, Deborah R Winter, Meital Gury-BenAri, Evgeny Tatirovsky, Timur Tuganbaev, Sara Federici, Niv Zmora, David Zeevi, Mally Dori-Bachash, Meirav Pevsner-Fischer, Elena Kartvelishvily, Alexander Brandis, Alon Harmelin, Oren Shibolet, Zamir Halpern, Kenya Honda, Ido Amit, Eran Segal, Eran Elinav
The intestinal microbiota undergoes diurnal compositional and functional oscillations that affect metabolic homeostasis, but the mechanisms by which the rhythmic microbiota influences host circadian activity remain elusive. Using integrated multi-omics and imaging approaches, we demonstrate that the gut microbiota features oscillating biogeographical localization and metabolome patterns that determine the rhythmic exposure of the intestinal epithelium to different bacterial species and their metabolites over the course of a day...
December 1, 2016: Cell
https://www.readbyqxmd.com/read/27904735/urinary-metabolomics-of-young-italian-autistic-children-supports-abnormal-tryptophan-and-purine-metabolism
#16
Federica Gevi, Lello Zolla, Stefano Gabriele, Antonio M Persico
BACKGROUND: Autism spectrum disorder (ASD) is still diagnosed through behavioral observation, due to a lack of laboratory biomarkers, which could greatly aid clinicians in providing earlier and more reliable diagnoses. Metabolomics on human biofluids provides a sensitive tool to identify metabolite profiles potentially usable as biomarkers for ASD. Initial metabolomic studies, analyzing urines and plasma of ASD and control individuals, suggested that autistic patients may share some metabolic abnormalities, despite several inconsistencies stemming from differences in technology, ethnicity, age range, and definition of "control" status...
2016: Molecular Autism
https://www.readbyqxmd.com/read/27899923/community-metabolome-correlations-of-gut-microbiota-from-child-turcotte-pugh-of-a-and-b-patients
#17
Xiao Wei, Shan Jiang, Xiangna Zhao, Huan Li, Weishi Lin, Boxing Li, Jing Lu, Yansong Sun, Jing Yuan
The gut flora are widely involved in the cometabolism with the host and have evident effects on the metabolic phenotype of host. This study performed a metabolome analysis of the intestinal microbiota specific for liver cirrhosis. The study population included patients with Child-Turcotte-Pugh score of A (AP, n = 5) and B (BP, n = 5), and control subjects (NM, n = 3). Metagenomic DNA from fecal microbiota was extracted followed by metagenomic sequencing through Illumina MiSeq high throughput sequencing of 16S rRNA regions...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27895265/gut-homeostasis-microbial-dysbiosis-and-opioids
#18
Fuyuan Wang, Sabita Roy
Gut homeostasis plays an important role in maintaining animal and human health. The disruption of gut homeostasis has been shown to be associated with multiple diseases. The mutually beneficial relationship between the gut microbiota and the host has been demonstrated to maintain homeostasis of the mucosal immunity and preserve the integrity of the gut epithelial barrier. Currently, rapid progress in the understanding of the host-microbial interaction has redefined toxicological pathology of opioids and their pharmacokinetics...
November 28, 2016: Toxicologic Pathology
https://www.readbyqxmd.com/read/27892954/a-purified-membrane-protein-from-akkermansia-muciniphila-or-the-pasteurized-bacterium-improves-metabolism-in-obese-and-diabetic-mice
#19
Hubert Plovier, Amandine Everard, Céline Druart, Clara Depommier, Matthias Van Hul, Lucie Geurts, Julien Chilloux, Noora Ottman, Thibaut Duparc, Laeticia Lichtenstein, Antonis Myridakis, Nathalie M Delzenne, Judith Klievink, Arnab Bhattacharjee, Kees C H van der Ark, Steven Aalvink, Laurent O Martinez, Marc-Emmanuel Dumas, Dominique Maiter, Audrey Loumaye, Michel P Hermans, Jean-Paul Thissen, Clara Belzer, Willem M de Vos, Patrice D Cani
Obesity and type 2 diabetes are associated with low-grade inflammation and specific changes in gut microbiota composition. We previously demonstrated that administration of Akkermansia muciniphila to mice prevents the development of obesity and associated complications. However, the underlying mechanisms of this protective effect remain unclear. Moreover, the sensitivity of A. muciniphila to oxygen and the presence of animal-derived compounds in its growth medium currently limit the development of translational approaches for human medicine...
January 2017: Nature Medicine
https://www.readbyqxmd.com/read/27892936/influence-of-early-life-exposure-host-genetics-and-diet-on-the-mouse-gut-microbiome-and-metabolome
#20
Antoine M Snijders, Sasha A Langley, Young-Mo Kim, Colin J Brislawn, Cecilia Noecker, Erika M Zink, Sarah J Fansler, Cameron P Casey, Darla R Miller, Yurong Huang, Gary H Karpen, Susan E Celniker, James B Brown, Elhanan Borenstein, Janet K Jansson, Thomas O Metz, Jian-Hua Mao
Although the gut microbiome plays important roles in host physiology, health and disease(1), we lack understanding of the complex interplay between host genetics and early life environment on the microbial and metabolic composition of the gut. We used the genetically diverse Collaborative Cross mouse system(2) to discover that early life history impacts the microbiome composition, whereas dietary changes have only a moderate effect. By contrast, the gut metabolome was shaped mostly by diet, with specific non-dietary metabolites explained by microbial metabolism...
November 28, 2016: Nature Microbiology
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